JP2009119024A - 複室容器の製造方法および製造装置 - Google Patents
複室容器の製造方法および製造装置 Download PDFInfo
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- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
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- B29C65/16—Laser beams
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- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
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- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
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- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/234—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being in the form of tessellations
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- B29C66/05—Particular design of joint configurations
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- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
- B29C66/2442—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours in the form of a single arc of circle
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- B29C66/345—Progressively making the joint, e.g. starting from the middle
- B29C66/3452—Making complete joints by combining partial joints
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- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
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- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
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Abstract
【解決手段】重ねられた2枚の合成樹脂製フィルムの周縁部位置および複数の収納室に仕切るための仕切り部位置にレーザー出射装置13からレーザービームRを二次元スキャナ15に照射して熱融着により複数の収納室を有する複室容器を製造する際に、仕切り部位置におけるレーザービームの移動速度Vに対するレーザー出力Eの比(E/V)が、周縁部位置での比よりも小さくなるように、レーザ出力制御部32およびビーム移動速度制御部34により、レーザー出力およびビーム移動速度を制御する方法である。
【選択図】図2
Description
重ねられた2枚の合成樹脂製フィルムの周縁部および複数の収納室に仕切るための仕切り部にレーザービームを照射して融着させる際に、
仕切り部位置におけるレーザービームの移動速度Vに対するレーザー出力Eの比(E/V)が、周縁部位置での比よりも小さくなるように、レーザー出力および/またはビーム移動速度を制御する方法である。
重ねられた2枚の合成樹脂製フィルムを支持するフィルム支持装置と、
レーザービームを出射するレーザー出射装置と、
このレーザー出射装置から出射されたレーザービームを、互いに直交する軸心回りで回転可能に設けられた反射ミラーを介して、上記フィルム支持装置により支持された合成樹脂製フィルム上に導く二次元スキャナと、
上記レーザー出射装置および二次元スキャナを制御する制御装置とを具備し、
上記制御装置に、
上記レーザー出射装置のレーザー出力を制御するレーザー出力制御部と、上記二次元スキャナの反射ミラーの回転角度を制御してレーザービームの照射位置を周縁部位置および仕切り部位置に沿って移動させるビーム照射位置制御部と、上記二次元スキャナの反射ミラーの回転速度を制御してレーザービームの照射位置の移動速度を制御するビーム移動速度制御部とを具備させるとともに、
上記仕切り部でのビーム移動速度Vに対するレーザー出力Eの比(E/V)が、周縁部のそれよりも小さい値となるように制御するようにしたものである。
さらに、稼動時において、昇温に時間がかかる金型に比べて、レーザーを用いた場合には、その立ち上げが早くなり、したがって生産速度を上げることができる。
本実施の形態に係る複室容器は、合成樹脂製の袋状容器で且つ複数種類の例えば2種類の液体をそれぞれ別個に収納し得る2つの収納室(勿論、3種類の液体を収納する場合には、3つの収納室が設けられる)を有するもので、その製造に際しては、2枚の合成樹脂製フィルム、すなわちポリエチレン系材料のフィルム(プラスチックフィルムともいう)を重ねた状態で、所定の周縁部(容器の口部、充填口部などを除いた周縁部である)と2つの収納室を形成するための中間に配置される仕切り部とが、レーザービームにより加熱されて熱融着(加熱による溶着ともいえる)される。
図2に示すように、この製造装置11は、互いに重ねられた2枚のフィルム2を支持するフィルム支持装置12と、所定出力のレーザービームRを出射し得るレーザー出射装置13と、このレーザー出射装置13から出射されたレーザービームの径を調節し得る、すなわちビーム径を大きくし得るビームエキスパンダ14と、互いに重ねられた2枚のフィルム2にレーザービームを反射させてフィルム2に照射し得る二次元スキャナ(ガルバノスキャナともいう)15と、上記レーザー出射装置13、ビームエキスパンダ14および二次元スキャナ15を制御する制御装置16とから構成されている。
ここでは、エキスパンダ14を使用しない場合について説明する。
まず、互いに重ねられた状態で2枚の合成樹脂製フィルム2が、フィルム支持装置12である例えば一対のロール12a,12a間上に移動されると、制御装置16のレーザー出力制御部32からの指令により、レーザー出射装置2からレーザービームRが所定のレーザー出力でもって出射されるとともに、ビーム照射位置制御部33およびビーム移動速度制御部34により二次元スキャナ15が制御される。
さらに、連続的に製造するとき、金型の場合には、フィルムが熱にやられて不良品がでると、製造ラインが止まることになるが、レーザーを用いている場合に不良品がでると、レーザーの出力およびレーザービームの移動速度を修正して引き続き製造を行うことができるので、メンテナンスの必要がなくなる。
[実施例]
ここで、具体的で且つ適正な数値を用いた製造方法の実施例について説明する。
一方、強シール部の場合、速度対出力比が0.4未満である場合は、接着強度が弱くなり過ぎ、1.0を超える場合は、フィルムに熱変形が起こってしまう。つまり、強シール部における速度対出力比は、0.4〜1.0の範囲にされる。
すなわち、レーザー出力、ビーム移動速度、ビーム照射位置データなどをレーザー出射装置13およびガルバノスキャナ15に出力し得る制御装置16を設けたので、複室容器1における接着強度(つまり接着幅)、接着パターン(つまりシール部形状)、シール位置を任意に調整することができる。
2 フィルム
3 周縁部
4 仕切り部
5 収納室
11 製造装置
12 フィルム支持装置
12a ローラ
13 レーザー出射装置
14 ビームエキスパンダ
15 二次元スキャナ
16 制御装置
23 第1反射ミラー
24 第2反射ミラー
31 制御パラメータ設定部
32 レーザー出力制御部
33 ビーム照射位置制御部
34 ビーム移動速度制御部
35 エキスパンダ制御部
41 接着部分
42 矩形線状部
43 格子線状部
51 接着部分
52〜56線状部
61 接着部分
62 第1線状部
63 第2線状部
71 接着部分
72,73円弧線状部
74,75直線線状部
76 内側直線線状部
Claims (5)
- 2枚の合成樹脂製フィルムが貼り合わされるとともに仕切り部により複数の収納室が形成される複室容器の製造方法であって、
重ねられた2枚の合成樹脂製フィルムの周縁部および複数の収納室に仕切るための仕切り部にレーザービームを照射して融着させる際に、
仕切り部位置におけるレーザービームの移動速度Vに対するレーザー出力Eの比(E/V)が、周縁部位置での比よりも小さくなるように、レーザー出力および/またはビーム移動速度を制御することを特徴とする複室容器の製造方法。 - 周縁部および/または仕切り部を融着する際に、レーザービームを格子状または菱形状に移動させることを特徴とする請求項1に記載の複室容器の製造方法。
- 重ねられた2枚の合成樹脂製フィルムの周縁部および仕切り部が融着されて複数の収納室が形成される複室容器の製造装置であって、
重ねられた2枚の合成樹脂製フィルムを支持するフィルム支持装置と、
レーザービームを出射するレーザー出射装置と、
このレーザー出射装置から出射されたレーザービームを、互いに直交する軸心回りで回転可能に設けられた反射ミラーを介して、上記フィルム支持装置により支持された合成樹脂製フィルム上に導く二次元スキャナと、
上記レーザー出射装置および二次元スキャナを制御する制御装置とを具備し、
上記制御装置に、
上記レーザー出射装置のレーザー出力を制御するレーザー出力制御部と、上記二次元スキャナの反射ミラーの回転角度を制御してレーザービームの照射位置を周縁部位置および仕切り部位置に沿って移動させるビーム照射位置制御部と、上記二次元スキャナの反射ミラーの回転速度を制御してレーザービームの照射位置の移動速度を制御するビーム移動速度制御部とを具備させるとともに、
上記仕切り部でのビーム移動速度Vに対するレーザー出力Eの比(E/V)が、周縁部のそれよりも小さい値となるように制御するようにしたことを特徴とする複室容器の製造装置。 - レーザー出射装置から出射されたレーザービームの出射経路の途中にビームエキスパンダを配置するとともに、このビームエキスパンダを、ビーム拡大部と当該ビーム拡大部を出射経路上と出射経路から外れた退避位置との間で移動させ得る拡大部移動部とから構成したことを特徴とする請求項3に記載の複室容器の製造装置。
- 周縁部および/または仕切り部の融着部分を、レーザービームを格子状または菱形状に移動させることにより形成したことを特徴とする請求項3に記載の複室容器の製造装置。
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